//package com.wr.common.payment.pay.util;
//
//import javax.crypto.Cipher;
//import javax.crypto.NoSuchPaddingException;
//import javax.crypto.spec.GCMParameterSpec;
//import javax.crypto.spec.SecretKeySpec;
//import java.io.IOException;
//import java.security.GeneralSecurityException;
//import java.security.InvalidAlgorithmParameterException;
//import java.security.InvalidKeyException;
//import java.security.NoSuchAlgorithmException;
//import java.util.Base64;
//
//public class AesUtil {
//
//    static final int KEY_LENGTH_BYTE = 32;
//    static final int TAG_LENGTH_BIT = 128;
//    private final byte[] aesKey;
//
//    public AesUtil(byte[] key) {
//        if (key.length != KEY_LENGTH_BYTE) {
//            throw new IllegalArgumentException("无效的ApiV3Key，长度必须为32个字节");
//        }
//        this.aesKey = key;
//    }
//
//    public String decryptToString(byte[] associatedData, byte[] nonce, String ciphertext)
//            throws GeneralSecurityException, IOException {
//        try {
//            Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
//
//            SecretKeySpec key = new SecretKeySpec(aesKey, "AES");
//            GCMParameterSpec spec = new GCMParameterSpec(TAG_LENGTH_BIT, nonce);
//
//            cipher.init(Cipher.DECRYPT_MODE, key, spec);
//            cipher.updateAAD(associatedData);
//
//            return new String(cipher.doFinal(Base64.getDecoder().decode(ciphertext)), "utf-8");
//        } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
//            throw new IllegalStateException(e);
//        } catch (InvalidKeyException | InvalidAlgorithmParameterException e) {
//            throw new IllegalArgumentException(e);
//        }
//    }
//}